Tlie Botany of Hingham. m 



Iva, L. 



frutescens, L. Marsh Elder. 



Ambrosia, Tourn. 



artemisisefolia, L. Roman Wormwood. 



Xanthium, Tourn. 



Canadense, Mill. far. echinatum, Gray. Cockle-bur. 



Rudbeckia, L. 



hirta, L. Cone-flower. 



Helianthus, L. 



aim ti us, L. Sunflower. 



divaricatus, L. 



strumosus, L. 



decapetalus, L. 



tuberosus, L. Jerusalem Artichoke. 



Coreopsis, L. 



tinctoria, Nutt. Not common. 



Bidens, L. 



frondosa, L. Beggar-ticks, 

 connata, Muhl. Swamp-ticks. 

 cernua, L. Smaller Swamp-ticks, 

 chrysanthemoides, Mx. Larger Swamp-ticks. 



Anthemis, L. 



Cotula, D C. May-weed. 



arvensis, L. Corn Chamomile. Rare. 



Achillea, L. 



Millefolium. L. Yarrow. 

 Ptarmica, L. Sneeze-wort. Rare. 



Chrysanthemum, Tourn. 



Leucanthemum, L. Daisy. White-weed. 



Tanacetum, L. 



vulgare, L. Tansy. 



Artemisia, L. 



vulgaris, L. Mugwort. 



Senecio, Touru. 



aureus, L. Golden Rag-wort. 

 vulgaris, L. Groundsel. 



Erechtites, Raf. 



hieracifolia, Raf. Fire-weed. 



Arctium, L. 



Lappa, L., var. minus, Gray. Burdock. 



Cnicus, Tourn. 



arvensis, Hoffm. Canada Thistle. 



lanceolatus, Hoffm. Common Thistle. 



pumilus, Torr. Pasture Thistle. 



altissimus, Willd., var. discolor, Gray. Tall Thistle. 



muticus, Pursh. Swamp Thistle. 



horridulus, Pursh. Yellow Thistle. 



Onopordon, Vaill. 



Acanthium, L. Cotton Thistle. 



